Disney-MGM Studios opened at Walt Disney World on May 1, 1989.
Compared to Disneys other two Florida theme parks—the rich-with-rides Magic Kingdom Park and the immense, grandiose EPCOT Center—it was a simple park.

Disney-MGM Studios consisted of two parts:

Backstage Studio Tour: A two-hour guided tour, with a tram portion and an hour-long walking portion that included a chance to observe actual soundstages for television and motion picture production.

Theme Park: A nicely designed guest area, but modest in scope, with several shops, restaurants, and shows.
And exactly one ride (apart from the tram tour), The Great Movie Ride.

The map at the top of this article is scanned from the Guide Book that guests received upon entering the park in 1989.
Here are some things you might notice:

Theres no Sunset Boulevard, no Twilight Zone Tower of Terror, no RocknRoller Coaster, and no Fantasmic!